Located on West Cromwell Road, one of the major traffic routes into London, the steel structure measures 30 metres long and nine metres high.
It comprises a curved digital screen that is 26 metres long and six metres high, wrapped in two interlocking ribbons of matt stainless steel.
Lighting is integrated into the rear of the advertising board, to illuminate a walkway for pedestrians.
"Both a civic gesture and a promotional medium, the intertwined, looped ribbon design expresses the dynamism of pedestrian and vehicle traffic movements that intersect at this important London junction," said Melodie Leung senior associate at Zaha Hadid Design.
"The stainless-steel ribbon twists as it encircles the screen, defining a varying silhouette when seen from different viewpoints," she said.
JCDecaux commissioned Zaha Hadid Design in 2014, with a brief to "create a new genre in the roadside advertising canon".
It replaces a pavilion containing two advertising boards, which previously stood on the site.
"It will be fascinating to see how brands respond to this sculptural digital canvas," said Leung.
"This has been a unique collaboration with JCDecaux to develop new possibilities for media platforms; transforming the billboard into public art," she continued.
Other design projects to emerge from Zaha Hadid's studio include a reinterpretation of a classic Hans J Wegner chair in stone and a hat based on the swooping shapes of an apartment block beside New York's High Line.
Photography is by JCDecaux, unless stated.
Design: Zaha Hadid with Patrik Schumacher
Project director: Melodie Leung
Project architect: Carine Posner
Project team: Evgeniya Yatsyuk, Ovidiu Mihutescu, Natassa Lianou, Saman Dadgostar
Project manager: JCDecaux
Contract administration: Lavingtons
Quantity surveyor: Lavingtons
Structure: Buro Happold Engineering
Civil engineering: Buro Happold Engineering
MEP: Hoare Lea
Lighting: Buro Happold Engineering
Landscape design: MRG Studio
Principal designer: Orsa Projects
Principal contractor: Knight Brown Construction
Stainless steel: Central Industry Group
Granite: S.McConnell and Sons
Specialty brickwork: Grangewood and European Building Materials
LED screen: Daktronics